Wireshark-bugs: [Wireshark-bugs] [Bug 2257] Issue with the analysis of radius packets
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 3 Mar 2008 12:24:59 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2257


Anders Broman <anders.broman@xxxxxxxxxxxx> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anders.broman@xxxxxxxxxxxx
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID




--- Comment #1 from Anders Broman <anders.broman@xxxxxxxxxxxx>  2008-03-03 12:24:53 GMT ---
In my opiniom the AVP is malformed, from RFC2868:

A summary of the Tunnel-Private-Group-ID Attribute format is shown
   below.  The fields are transmitted from left to right.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |      Type     |    Length     |     Tag       |   String ...
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Type
      81 for Tunnel-Private-Group-ID.

   Length
      >= 3

   Tag
      The Tag field is one octet in length and is intended to provide a
      means of grouping attributes in the same packet which refer to the
      same tunnel.  If the value of the Tag field is greater than 0x00
      and less than or equal to 0x1F, it SHOULD be interpreted as
      indicating which tunnel (of several alternatives) this attribute
      pertains.  If the Tag field is greater than 0x1F, it SHOULD be
      interpreted as the first byte of the following String field.

   String
      This field must be present.  The group is represented by the
      String field.  There is no restriction on the format of group IDs.

It looks like the Tag is missing...I also interprete the minimum length as 4
Regards
Anders


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